209 lines
6.8 KiB
C
209 lines
6.8 KiB
C
/*
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* Copyright (c) 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* Simple test for testing ATI_envmap_bumpmap support.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <GL/glut.h>
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#include "readtex.h"
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static PFNGLGETTEXBUMPPARAMETERFVATIPROC glGetTexBumpParameterfvATI_func = NULL;
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static PFNGLGETTEXBUMPPARAMETERIVATIPROC glGetTexBumpParameterivATI_func = NULL;
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static PFNGLTEXBUMPPARAMETERFVATIPROC glTexBumpParameterfvATI_func = NULL;
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static const char *TexFile = "../images/arch.rgb";
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static const GLfloat Near = 5.0, Far = 25.0;
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static void Display( void )
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{
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/* together with the construction of dudv map, do fixed translation
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in y direction (up), some cosine deformation in x and more
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deformation in y dir */
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GLfloat bumpMatrix[4] = {0.1, 0.0, 0.2, 0.1};
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glClearColor(0.2, 0.2, 0.8, 0);
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glClear( GL_COLOR_BUFFER_BIT );
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glPushMatrix();
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/* this is the base map */
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glActiveTexture( GL_TEXTURE0 );
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glEnable( GL_TEXTURE_2D );
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glBindTexture( GL_TEXTURE_2D, 1 );
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glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
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glTexEnvf( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE );
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glTexEnvf( GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE );
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/* bump map */
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glActiveTexture( GL_TEXTURE1 );
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glEnable( GL_TEXTURE_2D );
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glBindTexture( GL_TEXTURE_2D, 2 );
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glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
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glTexEnvf( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_BUMP_ENVMAP_ATI );
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glTexEnvf( GL_TEXTURE_ENV, GL_BUMP_TARGET_ATI, GL_TEXTURE0);
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glTexBumpParameterfvATI_func(GL_BUMP_ROT_MATRIX_ATI, bumpMatrix);
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glCallList(1);
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glPopMatrix();
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glutSwapBuffers();
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}
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static void Reshape( int width, int height )
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{
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GLfloat ar = (float) width / (float) height;
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glViewport( 0, 0, width, height );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glFrustum( -ar, ar, -1.0, 1.0, Near, Far );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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glTranslatef( 0.0, 0.0, -6.0 );
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}
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static void Key( unsigned char key, int x, int y )
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{
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(void) x;
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(void) y;
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switch (key) {
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case 27:
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exit(0);
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break;
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}
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glutPostRedisplay();
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}
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static void Init( void )
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{
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const char * const ver_string = (const char * const)
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glGetString( GL_VERSION );
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GLfloat temp[16][16][2];
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GLubyte *image = NULL;
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GLint imgWidth, imgHeight;
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GLenum imgFormat;
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GLint i,j;
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GLint param, paramArray[16];
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GLfloat paramMat[4];
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printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
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printf("GL_VERSION = %s\n", ver_string);
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if ( !glutExtensionSupported("GL_ATI_envmap_bumpmap")) {
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printf("\nSorry, this program requires GL_ATI_envmap_bumpmap\n");
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exit(1);
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}
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glGetTexBumpParameterfvATI_func = glutGetProcAddress("glGetTexBumpParameterfvATI");
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glGetTexBumpParameterivATI_func = glutGetProcAddress("glGetTexBumpParameterivATI");
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glTexBumpParameterfvATI_func = glutGetProcAddress("glTexBumpParameterfvATI");
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glGetTexBumpParameterivATI_func(GL_BUMP_ROT_MATRIX_SIZE_ATI, ¶m);
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printf("BUMP_ROT_MATRIX_SIZE_ATI = %d\n", param);
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glGetTexBumpParameterivATI_func(GL_BUMP_NUM_TEX_UNITS_ATI, ¶m);
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printf("BUMP_NUM_TEX_UNITS_ATI = %d\n", param);
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glGetTexBumpParameterfvATI_func(GL_BUMP_ROT_MATRIX_ATI, paramMat);
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printf("initial rot matrix %f %f %f %f\n", paramMat[0], paramMat[1], paramMat[2], paramMat[3]);
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glGetTexBumpParameterivATI_func(GL_BUMP_TEX_UNITS_ATI, paramArray);
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printf("units supporting bump mapping: ");
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for (i = 0; i < param; i++)
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printf("%d ", paramArray[i] - GL_TEXTURE0);
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printf("\n");
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image = LoadRGBImage(TexFile, &imgWidth, &imgHeight, &imgFormat);
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if (!image) {
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printf("Couldn't read %s\n", TexFile);
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exit(0);
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}
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glBindTexture( GL_TEXTURE_2D, 1 );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
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glTexImage2D( GL_TEXTURE_2D, 0, imgFormat, imgWidth, imgHeight, 0,
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imgFormat, GL_UNSIGNED_BYTE, image );
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for (j = 0; j < 16; j++) {
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for (i = 0; i < 16; i++) {
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temp[j][i][0] = cos((float)(i) * 3.1415 / 16.0);
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temp[j][i][1] = -0.5;
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}
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}
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glBindTexture( GL_TEXTURE_2D, 2 );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
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glTexImage2D( GL_TEXTURE_2D, 0, GL_DU8DV8_ATI, 16, 16, 0,
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GL_DUDV_ATI, GL_FLOAT, temp );
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glNewList( 1, GL_COMPILE );
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glBegin(GL_QUADS);
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glColor3f( 0.9, 0.0, 0.0 );
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glMultiTexCoord2f( GL_TEXTURE0, 0.0, 0.0 );
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glMultiTexCoord2f( GL_TEXTURE1, 0.0, 0.0 );
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glVertex2f(-1, -1);
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glMultiTexCoord2f( GL_TEXTURE0, 1.0, 0.0 );
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glMultiTexCoord2f( GL_TEXTURE1, 1.0, 0.0 );
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glVertex2f( 1, -1);
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glMultiTexCoord2f( GL_TEXTURE0, 1.0, 1.0 );
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glMultiTexCoord2f( GL_TEXTURE1, 1.0, 1.0 );
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glVertex2f( 1, 1);
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glMultiTexCoord2f( GL_TEXTURE0, 0.0, 1.0 );
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glMultiTexCoord2f( GL_TEXTURE1, 0.0, 1.0 );
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glVertex2f(-1, 1);
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glEnd();
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glEndList();
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}
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int main( int argc, char *argv[] )
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{
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glutInit( &argc, argv );
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glutInitWindowPosition( 0, 0 );
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glutInitWindowSize( 400, 400 );
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glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
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glutCreateWindow( "GL_ATI_envmap_bumpmap test" );
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glutReshapeFunc( Reshape );
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glutKeyboardFunc( Key );
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glutDisplayFunc( Display );
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Init();
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glutMainLoop();
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return 0;
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}
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